CH

Chung-Hsien Hsieh

📍 New Taipei, TW: #334 of 2,136 inventorsTop 20%
Overall (2017): #164,256 of 506,227Top 35%
2
Patents 2017

Issued Patents 2017

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
9587422 Direction switchable ratchet device for door operator — 2017-03-07
9562385 Door operator system capable of detecting a current-time position of a movable barrier — 2017-02-07